Flange-back adjusting method and apparatus for a video camera us

Details Flange-back adjusting method and apparatus for a video camera us Flange-back adjusting method and apparatus for a video camera us

1994-11-22

1998-06-09

Garber, Wendy

Television

Camera, system and detail

Optics

348347, 348345, 2502017, H04N 5232

Patent

active

057642907

ABSTRACT:
Flange-back adjustment in a video camera using an inner focus lens assembly is done by detecting a position on the top of an actual zoom tracking curve and by detecting positions of end points of a variater on the basis of the top. Positions of the end points are presumed by a calculation from a position of the variater before arrival at an end. That is, by using the position of the variater in focus as a result of a movement of a focus lens from the top, and a ratio of a distance from the position of the variater in focus to one of the end points versus a distance from the position of the variater in focus to the other of the end points, positions of the end points are obtained.

REFERENCES:
patent: 4949087 (1990-08-01), Miyazawa

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